Marvel Mystery Oil
Marvel Mystery Oil is a product of the Marvel Oil Company, founded by Burt Pierce in 1923.
After World War I, vehicles encountered carburetor problems. As a result Pierce formulated a blend of chemicals and petroleum to clean and maintain clogged jets. It proved beneficial for engines by creating a top ring seal producing higher compression, preventing blow-by on power strokes, resulting in more power.
Name
The name Mystery Oil comes from Burt's answer to the question, "what kind of oil is this?" to which Pierce would respond, "It's a mystery!"
Composition
The product is composed of 74 percent mineral oil, 25 percent stoddard solvent, and 1 percent lard.[1]
o-Dichlorobenzene (1,2-Dichlorobenzene (ortho-dichlorobenzene))0 - 5% , Fine White Mineral Oil 70 - 100% , Mineral Spirits 20 - 30% [2]
Competition
There are numerous competing products to clean fuel systems, one of which is Techron.